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FXUS65 KVEF 290919 AFDVEF

Area Forecast Discussion National Weather Service Las Vegas NV 119 AM PST Wed Nov 29 2023

SYNOPSIS
A weakening low pressure system will pass over the area today and tonight bringing some light showers to mainly Mohave County. Additional systems are forecast to pass by to the north, bringing some increase in wind to south central Nevada on Friday and possible light precipitation to parts of Mohave County. Expect periods of clouds along with seasonably cool temperatures through the weekend. Dry and warmer early next week under ridge of high pressure.

SHORT TERM
Through Friday night.

Partly to mostly cloudy skies across the southern Great Basin and Mojave Desert currently. HRRR doing a reasonably good job handling the development of lower clouds over the Lake Mead NRA and northwest Arizona. Observations indicate cloud bases between 7-8 kft AGL.
Trough along the central CA coast still progged by all models to weaken as it moves inland across the region this afternoon through tonight. Models consistent that the only area of precipitation to develop will be over parts of western Grand Canyon and and northern Mohave County early this evening and probably be exiting far northeast Mohave County around 5 am MST Thursday morning. Additional energy dropping through a broad trough across the Great Basin will maintain slight chance to chance PoPs mainly across Inyo County, south central Nevada and northwest Arizona Thursday night through Friday night. Precipitation amounts again look light, especially compared to QPF amounts 24 hours ago.

It will become breezy across the western Mojave Desert tomorrow, then across southern Nevada Friday. Temperatures will be running at or slightly below normal through Friday.

LONG TERM
Saturday through Tuesday.

Temperatures will remain cool on Saturday and Sunday behind a departing shortwave set to push east of the area. Northerly breezes will persist especially down the Colorado River, but will tend to let up by early in the week as a large ridge builds along the West Coast. This ridge will shift inland Monday and Tuesday with temperatures climbing a few degrees above normal with light winds and dry conditions.

AVIATION
For Harry Reid...Winds of 6KT or less following typical diurnal patterns of northeasterly during the day and southwesterly during the night are expected through tonight. Broken clouds generally above 15-20 kft today will decrease this evening.

For the rest of southern Nevada, northwest Arizona and southeast California...Northwest Arizona will see broken to overcast clouds with bases 10-12 kft MSL with areas of precipitation near the western Grand Canyon and Arizona Strip this afternoon and tonight.

Southeast California and southern Nevada can expect fair weather with winds generally less than 10 knots and broken clouds above 15- 20 kft through this afternoon then clearing this evening.

SPOTTER INFORMATION STATEMENT
Spotters are encouraged to report any significant weather or impacts according to standard operating procedures.

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